Pneumatic tool.



PATENTED FEB. 11, 1908.

G. DW. MARGY. PNEUMATIC TOOL. APPLICATION FILED 0011, 1007.

2 SHEETS-SHEET 1.

No. 878,548. PATBNTED FEB. 11, 1908. I

' G; n'w. MARCY.

PNEUMATIC TOOL. APPLICATION FILED 00T.1', 1907.

2 SHEETS-SHEET 2.

GROSVENOB. D W. MARCY, OF DORGHESTER, MASSAOHUSETTSJ PNEUMATIC TOOL.

Specification of Letters Patent. Application filed October 1.1907. Serial No. 395,464.

- Patented Feb. 1 1, 1908.

To all whom it may concern: I Be it known that GROSVENOR DW.

Manor, a citizen of the United States, residtory, or the like.

vention w' While the device is shown and described in this application as an index cutter, it is apparent that it is not limited to this use, but with minor changes it is capable of being used for cutting, punching, riveting, expanding or forming, or in any case Where a hand operated too does not give a powerful enough p. v Broa y mv invention consists .of a stationary member with a movable tool carrying jaw pivoted thereto, the movable jaw being actuated through a system of links b the iston of a fluid pressure cylinder. l t will be obvious that when this tool is used for cutting, punching, riveting, forming, or other purposes, any pair of cooperating tool elements, such as shear blades, punch and die, etc., maybe carried by, or form part of, y

the members.

My invention further includes means whereby the exhaust from the cylinder removes the cuttings from the machine, and other improvements, which will be hereinafter more articularly set forth, and the inbe defined in the appended claims, forming a part of this specification.

Reference is to be had to the accompanying dra in which similar reference characters indicate corresponding parts in all the figu'res.

Figure 1 is a side elevation of the assembled index cutter, with part of the cyhnderb'roken away. Figs. 2 and 3 arerespectively elevation and fragmentary plan viewwof the stationarv member. Fi '4 is a section of the (glind er head through the valve chamber.

'g. 5 is an elevation of cylinder head, lookinder head through center line of cylinder. Fig. 8 is an elevation of valve spindle. Fig. 9 is an elevation of exhaust valve seat.

The stationary member 2 carries the lower fixed j aw 4 at one end and is provided intermediate of its length with a suitable grip 5 by which the whole tool is held. The member 2 is also provided with an elongated slot 56 through which asses the movable member 3 of substantia l thesame length as the member 2, and in w 'ch it is pivoted by the pin 17. A brass gage block 18 carrying an adjustable ga e 19 is set into the jaw 4, directly under the cutter. The movable j aw 3 carries atone end the cutting tool 23 secured thereto in any suitable manner. From the under side of the fixed aw. the apertured lug 12 extends downward {and to this is attached the cylinder 22, y the cyhnder head.

Inthe cylinder is the piston 21 to which theor connecting rod 9 is pivoted by means of pin 20.

To the end of the stationary'member 2 and the movablemember 3 respectively are pivoted one end of the links 7 and 8 by means of pins 6 and 16, respectively. These two links,.at their lower, or free ends, and the connecting rod 9 are all pivoted togeltlllier by the pin 27. It will be seen that the 7 in swinging'about the fixed point 6 guides the pin 27 along the arc ofa circle centered at 6. V

In the cylinder-head is located the valve mechanism, which will now be described.

in from cyhnder. Fig. 6 is. a plan view of cy 'nder head. Fig. 7 is a. section of cyl- 'The cyhnder-head is formed with two up- 7 standing stems 11 and 31 which in the assembled device are positioned one on each side of the 'aws. To the stem 31 is attached the flexi le tube 26 conve v the compressed air or fluid to operate the evice. The air is led down through the stem 31 andthe horizontal passage 33 into the chamber 54 under the stem 11. The horizontal chamber 54 widens just below the passage 33 forming a" valve seat 35 for the upper portion of the valve 41, formed on the valve stem, Fig. '8.

The valve spindle extends through the stem 11, terminating in the button 14 and is normally held by the spring 25 with the bearing surface 4i against the seat 35, thus shutting off the compressed air from the valve chamber 30 and the cylinder. In the valve chamber is formed the port 36 directly 5 openim into the head end of the cylinder.

passage a small tube 13 is led upwardly and tion of the gage block. The end of the valve terminates on; the fixed jaw near the gage block. A tension spring 15 extends from the nozzle 11 to the link 7 and serves to raise the cutter after each down stroke.

The operation of my improved cutter is as follows: The stationary jaw 4 is inserted into the book to be indexed, restingon the page which is to bear the index character, the depth of out being determined by the posistem is now pressed down, the surfaces 41 and 35 being separated, and air admitted to the valve chamber 30, and through the port 36 to the head end of the cylinder. The

downward motion of the valve spindle has, I meantime, seated valve 43 upon valve seat 55 and so, closed the passage 53.

The piston is forced along the cylinder, the pin 27 moving on the arc of a circle centered at 6, and the link 8 raises theend of the movtor and it is raised by the spring 25.

45 the tube 13 able jaw 3 whereby thecutter is driven down ,through the leaves between it and the fixed jaw. At the end of the stroke the button on the valve spindle is released by the opera- The passage 53 is thereupon opened and the piston is pulled back toward the head en d of the cylinder by the spring 15 while the air contamed 1n the cylinder is forced out through and the chips blown off the'gage a .block. j

Having thus described my invention I claim-as new and desire to secure by Letters Patent 1. In a devicepof the character described,

the combination of a stationary member wlth a fluid pressu e cylinder attached there-' to and a movable member, .the rear end thereof operating transversely'between the sitatlonary member-and the attached-cylin;

2. In a device of the character described, a

: stationary member, afluid ressure-cylinder and a cylinder-head provi ed with lugs, in combination with a movable member, a portion thereof operating transversely between V the stationary member and said cylinder.

-3 In a device of the character described,

the combination of a stationary member and a fluid pressure cylinder attached thereto, witli'a movable member, links pivoted between the rear ends of said members, therear end of the movable member operating transversely to and from the cylinder.

4. The combination with a c linder and piston, of stationary and movab e members,

the cylinder being attached to the stationary member, a connecting rod attached to "the piston, links pivoted to each of the two members and at their free ends to the connecting rod, and tool elements carried by the said members.

-5. The combination with a cylinder and piston, of a stationary member, a movable member pivoted thereto, the cylinder being attached to the stationary member, a connecting rod attached to the piston, links pivoted to each of the two members, the

longer link being pivoted to the stationary member, the links at their free ends ivoted to the connecting rod and tool e ements. carried by the said members.

6. The combination witha cylinder and a piston of a cylinder head containing a double acting valve, tool elements and power multiplying means to actuate said elements I 7. In a device of the character described, the combination with a cylinder and piston of stationary and 'movable members, a pivotal connection between the two mem bers intermediate of their length, one of said members supporting the cylinder and tool elements carried by the said members.

8. In a device ofthe character described, the combination of a cylinder, stationary and movable members, a c linder head, a valve carried thereby, a ouble acting valve spindle for controlling exhaust and admisslon ports, and a tube/connecting with the exhaust port whereby the exhaust removes chips from the device.

*9. In a fluid operated tool the combination'of a cylinder, stationary and movable members, a cylinder head, a valve carried by said cylinder head, a valve spindle exteniiing at right angles to the cylinder, and means whereby the exhaust from the valve removes located .one on each side ofthe stationary member, one of said stems having a passage for the actuating fluid and a valve spindle adapted to reciprocate in the other stem.

11. In a 'flui tion of a stationary and a movable member,

a cylinder having a cylinder .head formed with a valve and anupstanding stem located on one side of: the stationarymember and a operated tool, the combiner erating in said stem. ricd by the said members. 10

valve spindle for controlling the valve opporting the cylinder, and tooi elements car- 12. In a pneumatic tool, the combination In testimony whereof I aflix my signature with a cylinder and a piston, of stationary inpresence of two witnesses.

and movable members, a pivotal connection GROSVENOR DW. MARCY. between the two members, intermediate of WVitnesses:

their length, and a spring opposing the ac- W. F. DINSMORE, tion of the piston, one of said members sup- J. FRANKLIN HILL1KER.. 

